L and n indicate the supply. The electricity flows from the hot wire black through the 2 way switch shown in off position and then to the light and returns through the neutral wire white.

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Two switch circuit diagram. The essence of the wiring configuration is for one hot feed wire entering the switch box to be split so that it feeds both switches which in turn feed hot wires in cables that lead out to two separate light fixtures. 2 way switch 4. With a pair of 3 way switches either can make or break the connection that completes the circuit to the light. The hot and neutral terminals on each fixture are spliced with a pigtail to the circuit wires which then continue on to the next light. This diagram illustrates wiring for one switch to control 2 or more lights. A 2 way switch wiring diagram with power feed from the switch light.
Wiring a 3 way light switch. Two way switching 2 wires. Two way switches and three way switches operate the same way and have the same connection points they just have different names in the uk which are common l1 and l2. 2 way switching two wire control ive included this method of 2 way switching for reference because you may come across it in old homes but i dont recommend you use it. You will see that there is a hot wire that is then spliced through a switch and that then goes to the hot terminal of the light. It is not uncommon for a circuit to be configured so that two wall switches in a single double gang box control two different light fixtures.
The power source comes from the fixture and then connects to the power terminal. The most basic circuit with only two wires at the switch. Pin1 of both the switches are connected with the phase or live wire and pin2 of both the switches are connected with the one end of the lamp. Lets assume the load you are controlling is a light. Switches are shown as dotted rectangles. By wiring a 2 way switch the circuit below shows the basic concept of electricity flow to the load.
Uk two way switch wiring diagram. 2 way switch wiring diagram two way switch two way switching. These diagrams show various methods of one two and multiple way switching. In the united kingdom some electricians use an alternative method for wiring two way switches as depicted in the above wiring diagram. Wiring a 3 way light switch is certainly more complicated than that of the more common single pole switch but you can figure it out if you follow our 3 way switch wiring diagram. Earth wires are not shown.
The source is at sw1 and 2 wire cable runs from there to the fixtures. This is a completed circuit. The other end of the lamp is connected with neutral line of ac power supply. As you can see in the schematic diagram of 2 way switch circuit below the common of both the switches are short circuited.